Home / 13,565.86-20,342.41-5,249.79

Finding the Fourth Proportional to 13,565.86, 20,342.41 and 5,249.79

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Solution

The fourth proportional to 13,565.86, 20,342.41 and 5,249.79 is: 7,872.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,565.86 : 20,342.41 = 5,249.79 : x
  2. Step 2: Convert to fraction form
    13,565.86/20,342.41 = 5,249.79/x
  3. Step 3: Cross multiply
    13,565.86x = 20,342.41 × 5,249.79
  4. Step 4: Simplify right side
    13,565.86x = 106,793,367.47
  5. Step 5: Solve for x
    x = 106,793,367.47/13,565.86
  6. Step 6: Final answer
    x = 7,872.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.